A neuroscientist wants to examine how tryptophan, contained in foods such as turkey, can affect mental alertness. They collect data from n = 9 participants with scores from each participant on the video game Fortnite measured before and after eating a traditional Thanksgiving dinner including roast turkey. The average score dropped by y = 14 points after the meal with SS = 1152 for the difference scores. What is the value of Cohen's d? 0.10 1.17 0.11 1.24The study in the previous question would be best described as a.. Concurrent measures experimental design Post-Test only design One-group pre-test/post-test design Repeated measures design